3752 want more verifiable dbuf user eviction
Submitted by:   Justin Gibbs <justing@spectralogic.com>
Submitted by:   Will Andrews <willa@spectralogic.com>

@@ -1128,11 +1128,11 @@
                 sa_buf_rele(db, NULL);
                 ZFS_OBJ_HOLD_EXIT(zfsvfs, obj_num);
                 return (SET_ERROR(EINVAL));
         }
 
-        hdl = dmu_buf_get_user(db);
+        hdl = (sa_handle_t *)dmu_buf_get_user(db);
         if (hdl != NULL) {
                 zp  = sa_get_userdata(hdl);
 
 
                 /*